Machine for superimposing paper sheets



June 14, 1927.

P. J- CHRISTMAN, JR

MACHINE FOR SUPERIMPOSING PAPER SHEETS Fil ed March 17. 1926 l WW A) X 1 /Z I r A lhZiZABB it im a PETER JOSEPH (II-IJELISCLIJQAILV', JR., OF GREEN BAY, WISCONSIN.

v lVIACI-IINE FOR SUPERIMPOSING FAPER SHEETS.

Application filed March 17,1926.

it is desirable to supcrimpose or overlap the sheets.

Objects of this invention are to provide a mechanism which will receive the severed sheets, and which will superimpose or overlap them in a regular and orderly manner, which is of simple and reliable construction,

and which is adapted to cooperate with the usual types of paper machines.

An embodiment'of the invention is shown in the accompanying drawings, in which:

Figure 1 is a schematic view of themechanism.

Figure 2 is a detail view showing the tucker blade.

Figure. 8 is a. diagrammatic view showing the superimposed sheets, such view being drawn to a smaller scale.

Figure l is a diagrammatic view corresponding to Figure 3, but showing a different overlapping of the sheets.

Referring to the drawings, it will be seen that the mechanism comprises a pair of side frame bars 1 which are joined by transverse bars These transverse bars carry the upper shafts 3 and the lower shafts 4. These shafts in turn carry a pair of upper rollers 5 and a pair of lower rollers 6. Belts 7 are passed over the rollers 5 and 6 as shown in Figure 1. It isto be noted, however, that the spacing of the rollers 6 is greatcrthan that of the rollers 5 so that the operative stretches of the bolts 7 diverge as they pass downwardly. The upper rollers 5 are adapted to receive between them the severed sheets, one of such sheets being shown at 8 in engagei'nent with the belts. However, as these belts travel downwardly, the sheet is freed from binding engagement therewith, after it has been engaged by a third pair of rollers 9. As the rollers 9 feed the sheet downwardly, it is stripped therefrom by means of'the stripping fingers 10 which are set within grooves of the rollers 9 in the well known manner.

Between the rollers 6 and the rollers 9, a tucking blade 11 reciprocaites. This blade is carried by a curved lever 12 pivoted at any suitable fixed point of the machine as indi-' cated at 13. It is operated in any desired Serial No. 95,275.

manner, as by means, of the pitman 14 con nected to the crank pin 15 of the rotary disc 16. In operation, the rollers 9 travel a less er rate than the rollers 5 and 6. After they have gripped the sheet, the tucker blade 11 travels transversely and deflectsthe sheets as indicated at 8 in Figure 1. However, as the rollers 5 and 6 travel at a higher rate than the rollers 9, a second sheet will be StlPQllD'lPOECl or overlapped. this second sheet and the sheet which is tucked will be passed through the rollers 9 and the operation will be repeated.

Referring to Figure 3, it will be seen that the sheets 8 are overlapped'in a regular manner and to the same extent. The sheets in this condition are adapted to be passed to afolding machine.

It will be seen that th mechanism for causing overlapping of sheets is of extreme simplicity and is of very compact construction so tha it may be readily combined in a machine for severing and folding paper.

It is to be understood that the term superimposed is intended to cover any overlapping condition, and is so used throughout this case.

Although the invention has been described in considerable detail, such description is in tended as illustrative rather than limiting as the invention may be variously embodied and as the scope of such invention is to be determined as claimed.

It is to be understood that the overlapping of the sheets may be any amount desiredand may be secured by timing the parts. As shown in Figure 4, one-third overlap may he seemed.

I claim:

1. Mechanism for superimposing sheets comprising two pair of spaced rollers, belts passing over said rollers and adapted to receive the sheets, said belt-s havingopposed operative stretches diverging towards the delivery end thereof, a second pair of rollers adapted to receive the sheets from said belts,

a tucker blade mounted for reciprocation be tween. said second pair of rollers and said first mentioned rollers and adapted to deflect the rear end of the sheets while they are gripped by said second mentioned rollers,

' and means for oscillating said tucker blade,

said second mentioned rollers travelling at a lesser rate than said first mentioned rollers.

2. Mechanism for superimposing sheets comprising two pair of spaced rollers, belts Thereafter,

Ill)

passing over said rollers andvadapted to receivethe sheets, said belts'having opposed operative stretches diverging towards the delivery end thereof, a second'pair of rollers adapted to receive the sheets from saidloclts, a tucker blade mounted for reciprocation between said second pair of rollers and said first mentioned rollers and adapted to defleet the rear ends of the sheets while they are gripped by said second mentioned rollers, means for oscillating said tucker blade,

imposed sheets therefrom. In testimony that I claim the foregoing I have hereunto set my hand at Green Bay,

and stripping lingers cooperating With said second mentioned rollers to strip the superin the county of Brown and State of VVisconsin.

PETER JOSEPH CHRISTMAN, JR. 

